OPHTHALMIC SOLUTION CONTAINING HYALURONIC ACID OR SALT THEREOF AND PROPYLENE GLYCOL
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United States of America Patent
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Mar 27, 2014
app pub date -
Jun 22, 2012
filing date -
Jun 23, 2011
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Abstract
An aqueous ophthalmic solution containing hyaluronic acid or a salt thereof at a concentration from 0.03 to 0.5% (w/v) and propylene glycol at a concentration from 0.1 to 1.0% (w/v) comprises as a sole preservative, benzalkonium chloride at a concentration from 0.001 to 0.002% (w/v) and comprises an ionic tonicity agent at such a concentration that an osmotic pressure ratio of the ophthalmic solution becomes from 0.9 to 1.1.
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